Improvement in preserving wood from decay



l4.16.6 1VIA1-6. PRESERVING WOOD FROM DEGAY, &c. A No. 46,636. Patenteduuly 4, 1665.

UNITED .STATES PATENT OFFICE. i

ALEXANDER HAMAR, OE HUNGARY', AUSTRIA, AssIGNoR '11o JOHN c. FREMONT, or NEW YORK cI'rY.

IMPROVEMENT IN PRI-:SERVING WOOD FROM DEOAY, sbc.

Specification forming part of Letters Patent No. 48,636, dated July 4, 1865.

To all whom it may concern:

Be it known that I, ALEXANDER HAMAR, a

. citizen of Hungary, in the Empire ot' Austria, now residing in the city of Neu` York, have invented a new and useful Method of Preserving Timber from Destructive Insects and Decay; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanymgdrawin'g, makiugpart'of this specification, in which lows: A vat or tank, C, is placed on a suita-' ble support at an elevation of about twentysx feet, from the center of which is suspended a' perpendicular tube, I), which tube is from the ground continued horizontally any required length. To this tube, on its horizontal extension, are attached tubes 1, of'smaller diameter, at suitable intervals, each ot' which is againl attached to'onc end of a stick of timber by the pipes 2 at A. The vat or tank is filled with al solution of sulphate ot' iron in water in proportion ofione pound of the sulphate to one hundred pounds of water. It is obvious thatfor some descriptions oftimber a slight departure from this proportion may be found beneficial; but such change will of course not affect my invention; and it is also obvious that in some conditions ot'use timbermay require other metallic sulphates, all of which are embraced, or contemplated to be embraced, in myiuvention. The pressure of the weightof this duid, increased by the pressure ot' the atmosphere above it, exerts a pressure upon the end A of 'the beanntand forces the sap contained in the cells out at B. VVihenever the duid issues at I3 in the same purity as it enters at A, then `the process of ferriiication is performed, the timber is freed from sap, and the solution lls the cells. Thus prepared timber will resist all detrimental inilueuces from weather, insects, and time, and it is not iniiammable.

Wood by the same process may be made ot' any color byaproper preparationand coloring ot' the solution. This method is shown by the use of a cap covering, the end ot' the stick in which the tube is inserted. y

lVhat I claim as my invention, and desirel to secure. by Letters Patent, is

Preserving wood from decay, insects, and other destructive agents by means of a solution prepared suhstan tially as herein described, and applied inthe manner herein set forth.

In testimony whereot'l have hereunto sub- -scribed my name.

v ALEXANDER' HAMAP.

Witnesses WM. D. BALDWIN, JOHN S. HOLLINGSBEAD. 

